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<head>
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<title>River Rooks | Blog Lander (Tiling Hero &amp; Feed)</title>
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</head>
<body>
<main class="tiling-layout">
<!-- Top Global Status Bar (Gateway 3 Match) -->
<header class="global-bar">
<div class="brand-group">
<span class="status-indicator"></span>
<span>RIVER ROOKS // BLOG &amp; RESEARCH ARCHIVE</span>
</div>
<nav class="bar-nav" aria-label="Quick Navigation">
<a href="service-gateway-tiling.html" class="bar-link">Gateway 3 ↗</a>
<a href="#" class="bar-link active">&gt; Dispatches</a>
<a href="https://git.rooks.dev" target="_blank" rel="noopener" class="bar-link">Git Forge</a>
<a href="feed.xml" class="bar-link">RSS Feed</a>
<a href="index.html" class="bar-link">Catalog ↗</a>
</nav>
</header>
<!-- Hero Tile: Blog Mission & Topic Filters -->
<section class="hero-tile" aria-label="Blog Mission & Overview">
<div class="hero-pretitle">TECHNICAL PUBLICATION REPOSITORY &bull; ~/NOTES/INDEX.MD</div>
<h1 class="hero-main-title">Engineering Notes, CTF Write-Ups &amp; Systems Architecture</h1>
<p class="hero-landing-text">
Documenting bare-metal systems, embedded hardware audits, and network isolation architectures. Writing zero-allocation POSIX scripts, reverse engineering production microcontrollers, and analyzing memory allocator exploitation primitives.
</p>
<div class="filter-pills-row">
<span style="color: var(--text-muted); margin-right: 4px;">TOPIC FILTER:</span>
<button class="filter-tag-btn active" onclick="filterTopic('all', this)">[All Dispatches (5)]</button>
<button class="filter-tag-btn" onclick="filterTopic('firmware', this)">[#firmware (1)]</button>
<button class="filter-tag-btn" onclick="filterTopic('homelab', this)">[#homelab (2)]</button>
<button class="filter-tag-btn" onclick="filterTopic('security', this)">[#security (3)]</button>
<button class="filter-tag-btn" onclick="filterTopic('posix-sh', this)">[#posix-sh (1)]</button>
</div>
</section>
<!-- Split Grid: Featured Article + Research Index -->
<div class="split-grid">
<!-- Left Column: Featured Article Tile -->
<section class="tile" aria-label="Featured Technical Article">
<div class="tile-header">
<div class="tile-title">
<span>// PINNED RESEARCH WRITE-UP</span>
</div>
<span class="tile-meta">SPI FLASH &bull; 8 MIN READ</span>
</div>
<div class="featured-card-body">
<div class="featured-badge-row">
<span class="badge-pinned">[FEATURED DEEP DIVE]</span>
<span style="color: var(--text-muted);">2026-07-20 &bull; ~/notes/iot-firmware-spi-extraction.md</span>
</div>
<h2 style="margin: 0;">
<a href="article-tiling-firmware.html" class="featured-article-title">Reverse Engineering IoT Firmware: SPI Flash Extraction</a>
</h2>
<p class="featured-prose">
In security audits of embedded systems, retrieving firmware is the critical first step. When over-the-air updates are encrypted and debug ports (UART, JTAG) are disabled in production silicon, dumping physical SPI Flash memory becomes necessary. This writeup covers extracting firmware from an 8-pin SOP SPI flash chip using a Bus Pirate and flashrom to bypass bootloader lockdowns.
</p>
<!-- Terminal Code Box -->
<div class="terminal-code-box">
<div class="code-titlebar">
<span>extract_firmware.sh</span>
<span>POSIX sh</span>
</div>
<div class="code-content">
<pre><code># Query the SPI flash details using flashrom via Bus Pirate
flashrom -p buspirate_spi:dev=/dev/ttyUSB0,spispeed=1M -r firmware_dump.bin
# Verify the integrity of the binary dump by comparing hashes
if [ $? -eq 0 ]; then
echo "Dump successful. Running md5sum..."
md5sum firmware_dump.bin
fi</code></pre>
</div>
</div>
<div class="featured-cta-row">
<div class="tag-cluster">
<span style="color: var(--text-muted); font-size: 0.75rem;">[#firmware] [#hardware] [#security] [#bus-pirate]</span>
</div>
<a href="article-tiling-firmware.html" class="cta-button">READ FULL WRITEUP &rarr;</a>
</div>
</div>
</section>
<!-- Right Column: Quick Research Tracks & Telemetry -->
<div style="display: flex; flex-direction: column; gap: 16px;">
<!-- Publication Stats Tile -->
<section class="tile" aria-label="Archive Statistics">
<div class="tile-header">
<div class="tile-title">
<span>// ARCHIVE TELEMETRY</span>
</div>
<span class="tile-meta">STATIC HTML</span>
</div>
<div class="sidebar-stats-box">
<div class="stat-row">
<span>TOTAL ARTICLES:</span>
<span class="stat-val">5 PUBLISHED</span>
</div>
<div class="stat-row">
<span>TOTAL READING TIME:</span>
<span class="stat-val">51 MINUTES</span>
</div>
<div class="stat-row">
<span>ACTIVE TOPICS:</span>
<span class="stat-val">7 CATEGORIES</span>
</div>
<div class="stat-row">
<span>FORMAT COMPLIANCE:</span>
<span class="stat-val">IEEE STD 1003.1</span>
</div>
</div>
</section>
<!-- Curated Focus Tracks -->
<section class="tile" aria-label="Curated Topic Tracks">
<div class="tile-header">
<div class="tile-title">
<span>// RESEARCH TRACKS</span>
</div>
<span class="tile-meta">CURATED</span>
</div>
<div style="display: flex; flex-direction: column; gap: 8px;">
<a href="#" class="topic-track-item">
<div class="topic-track-title">&gt; Embedded &amp; Hardware Forensics</div>
<div class="topic-track-desc">Flash memory dumping, bus tapping, silicon pinout discovery.</div>
</a>
<a href="#" class="topic-track-item">
<div class="topic-track-title">&gt; Network Routing &amp; Homelab</div>
<div class="topic-track-desc">Traefik reverse proxying, WireGuard full-mesh, VLAN firewalls.</div>
</a>
<a href="#" class="topic-track-item">
<div class="topic-track-title">&gt; Low-Level Memory Exploitation</div>
<div class="topic-track-desc">glibc tcache safe-linking, heap corruption, House of Apple.</div>
</a>
</div>
</section>
</div>
</div>
<!-- Full-Width Article Feed Tile -->
<section class="tile" aria-label="Chronological Article Stream">
<div class="tile-header">
<div class="tile-title">
<span>// CHRONOLOGICAL DISPATCHES FEED</span>
</div>
<span class="tile-meta">ALL ARTICLES ORDERED BY DATE</span>
</div>
<div class="feed-list" id="feedList">
<!-- Post 2: Traefik -->
<article class="feed-card" data-tags="homelab networking">
<div class="feed-meta-row">
<time datetime="2026-07-15" class="feed-date">2026-07-15 &bull; 12 min read</time>
<span>~/notes/ha-traefik-docker.md</span>
</div>
<h3 style="margin: 0;">
<a href="article-tiling-traefik.html" class="feed-heading">&gt; Building a High-Availability Traefik Router with Docker Compose</a>
</h3>
<p class="feed-excerpt">
Architecting automated TLS wildcard certificate propagation, Docker provider label routing, zero-downtime container updates, and backend health-check failover routes on bare-metal infrastructure.
</p>
<div class="feed-tags-row">
<div class="tag-cluster">
<span>[#homelab]</span>
<span>[#docker-traefik]</span>
<span>[#networking]</span>
</div>
<a href="article-tiling-traefik.html" style="color: var(--accent-cyan); text-decoration: none;">Read Entry &rarr;</a>
</div>
</article>
<!-- Post 3: POSIX sh -->
<article class="feed-card" data-tags="posix-sh security">
<div class="feed-meta-row">
<time datetime="2026-07-10" class="feed-date">2026-07-10 &bull; 6 min read</time>
<span>~/notes/posix-sh-vs-bash.md</span>
</div>
<h3 style="margin: 0;">
<a href="#" class="feed-heading">&gt; POSIX sh vs. Bash: Portability in Modern Scripts</a>
</h3>
<p class="feed-excerpt">
Analyzing edge-case incompatibilities, syntax overhead, eliminating bashisms, and writing fast, bulletproof bootstrapping scripts for Alpine and embedded targets conforming to IEEE Std 1003.1.
</p>
<div class="feed-tags-row">
<div class="tag-cluster">
<span>[#posix-sh]</span>
<span>[#shell]</span>
<span>[#unix]</span>
</div>
<a href="#" style="color: var(--accent-cyan); text-decoration: none;">Read Entry &rarr;</a>
</div>
</article>
<!-- Post 4: Heap Exploitation -->
<article class="feed-card" data-tags="security">
<div class="feed-meta-row">
<time datetime="2026-06-28" class="feed-date">2026-06-28 &bull; 15 min read</time>
<span>~/notes/ctf-heap-glibc-2-35.md</span>
</div>
<h3 style="margin: 0;">
<a href="article-tiling-heap.html" class="feed-heading">&gt; CTF Write-up: Heap Exploitation in glibc 2.35</a>
</h3>
<p class="feed-excerpt">
Deconstructing modern glibc memory allocator defenses: tcache safe-linking pointer mangling, bypass primitives, and House of Apple file structure hijacking for arbitrary code execution.
</p>
<div class="feed-tags-row">
<div class="tag-cluster">
<span>[#ctf]</span>
<span>[#binary-exploitation]</span>
<span>[#security]</span>
</div>
<a href="article-tiling-heap.html" style="color: var(--accent-cyan); text-decoration: none;">Read Entry &rarr;</a>
</div>
</article>
<!-- Post 5: Zero-Trust WireGuard -->
<article class="feed-card" data-tags="networking security homelab">
<div class="feed-meta-row">
<time datetime="2026-06-14" class="feed-date">2026-06-14 &bull; 10 min read</time>
<span>~/notes/zero-trust-wireguard-opnsense.md</span>
</div>
<h3 style="margin: 0;">
<a href="#" class="feed-heading">&gt; Zero-Trust Network Isolation with WireGuard &amp; OPNsense VLANs</a>
</h3>
<p class="feed-excerpt">
Designing strict zone-based firewall rules across isolated VLANs (Management, Server DMZ, IoT, Trusted Clients) with point-to-point WireGuard cryptographic routing.
</p>
<div class="feed-tags-row">
<div class="tag-cluster">
<span>[#networking]</span>
<span>[#wireguard]</span>
<span>[#security]</span>
</div>
<a href="#" style="color: var(--accent-cyan); text-decoration: none;">Read Entry &rarr;</a>
</div>
</article>
</div>
</section>
<!-- Global Footer Tile (Matching Gateway 3 Exactly) -->
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<div>River Rooks &bull; University of Alabama College of Engineering</div>
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